Regarded as the most beautiful sounding phrase in the English language. In terms of phonaesthetics, “cellar door” is often held up as an example of the most euphonic sound combination. J.R.R. Tolkien, author of The Hobbit and Lord of the Rings, is credited as one of the first to make this claim. Say the words slowly: “cellar door.” Is the sound pleasing to your ears?
(Source: blog.dictionary.com, via black-berriess)